carrier waveform
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Carrier — has various meanings:In Science (physics, electronics, biology, mathematics, chemistry and other sciences): * Carrier wave, a waveform suitable for modulation by an information bearing signal * Charge carrier, an unbound particle carrying an… … Wikipedia
Carrier wave — In telecommunications, a carrier wave, or carrier is a waveform (usually sinusoidal) that is modulated (modified) with an input signal for the purpose of conveying information, [citeweb|title=Carrier wave with no modulation transports no… … Wikipedia
Carrier recovery — A carrier recovery system is a circuit used to estimate and compensate for frequency and phase differences between a received signal s carrier wave and the receiver s local oscillator for the purpose of coherent demodulation. Example of QPSK… … Wikipedia
Multi-carrier code division multiple access — (MC CDMA) is a multiple access scheme used in OFDM based telecommunication systems, allowing the system to support multiple users at the same time. MC CDMA spreads each user symbol in the frequency domain. That is, each user symbol is carried… … Wikipedia
Modulation — For musical change of key, see Modulation (music). For other uses, see Modulation (disambiguation). Passband modulation v · d · e … Wikipedia
Frequency modulation synthesis — In audio and music frequency modulation synthesis (or FM synthesis) is a form of audio synthesis where the timbre of a simple waveform is changed by frequency modulating it with a modulating frequency that is also in the audio range, resulting in … Wikipedia
Orthogonal frequency-division multiplexing — Passband modulation v · d · e Analog modulation AM · … Wikipedia
NICAM — This article is about a compression form for digital audio. For the media content rating institute, see Netherlands Institute for the Classification of Audiovisual Media. NICAM stands for Near Instantaneous Companded Audio Multiplex. It is an… … Wikipedia
ITU G.992.1 — In telecommunications, ITU G.992.1 (better known as G.DMT) is an ITU standard for ADSL using discrete multitone modulation. G.DMT full rate ADSL expands the usable bandwidth of existing copper telephone lines, delivering high speed data… … Wikipedia
Chip (CDMA) — In digital communications, a chip is a pulse of a direct sequence spread spectrum (DSSS) code, such as a pseudo noise code sequence used in direct sequence code division multiple access (CDMA) channel access techniques. In a binary direct… … Wikipedia
Electronic amplifier — A practical amplifier circuit An electronic amplifier is a device for increasing the power of a signal. It does this by taking energy from a power supply and controlling the output to match the input signal shape but with a larger amplitude. In… … Wikipedia
